Consider a fan-crossing drawing of \(G\) . If edge \(e\)  is crossed by
three edges, then the crossing edges are incident to a vertex \(v\) 
and \(e\)  is not crossed by any other edge. Now vertex \(v\)  can be
moved close to the crossing point of \(e\)  and the middle of the three
crossing edges. Similar to [1]}, the edges incident to
\(v\)  are rerouted first along \(e\) . Then \(e\)  is uncrossed if it is
crossed from one side, as in the fan-planar case
[2]}, and it is crossed at most once, in general, see
Fig. REF . Hence, there is a 2-planar drawing, which
is 1-gap-planar [3]}.
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